MINI Gen 3 Engine & ECU

The MINI Gen 3 engine refers to the third-generation engines used from 2014 onwards in models like the F56 Hatch, F55, F57 Convertible, F54 Clubman, and F60 Countryman. These include the B38 1.5L 3-cylinder and B48 2.0L 4-cylinder petrol engines developed by BMW.

Gen 3 engines are generally reliable but can suffer from carbon build-up (on direct injection models), high-pressure fuel pump faults, turbo wastegate rattle, and occasional oil leaks. Regular servicing helps mitigate issues.

Yes, the Gen 3 MINI ECU can be remapped to improve horsepower, torque, throttle response, and even fuel efficiency. Lohen offers ECU tuning options for both B38 and B48 engines, tailored for performance and safety.

With a stage 1 ECU tune, MINI B48 engines (Cooper S/JCW) can see gains of up to 40–60bhp depending on the original output and any supporting mods. The B38 engine can gain around 20–30bhp.

When done by experienced specialists using proven software, ECU tuning is safe and reliable. Lohen’s MINI Gen 3 ECU remaps are dyno-tested and designed to work within safe engine parameters.

A Stage 1 remap typically requires no hardware upgrades. For Stage 2 tuning, an upgraded intercooler, intake, downpipe, and exhaust are often recommended to safely increase performance.

Most MINI Gen 3 ECUs can be tuned via the OBD port, especially earlier models. However, newer ECUs may require bench flashing due to updated encryption. Lohen can advise based on your car’s build date

Yes, tuning can affect your manufacturer’s warranty and must be declared to your insurer. Some aftermarket warranties may still apply, and Lohen can provide advice on this.

Stage 1 is software-only tuning, safe for stock vehicles. Stage 2 involves both software and hardware upgrades like a sports cat, larger intercooler, or intake system for greater power gains.

We recommend more frequent oil changes- every 6,000 - 8,000 miles - for tuned Gen 3 engines. Use high-quality synthetic oil and genuine filters to keep the engine in peak condition.